#include<stdio.h>
int main()
{
	int kaiguan;
	printf("please enter a number: \n");
	scanf("%d",&kaiguan);
	switch(kaiguan)
	{
		case 4:
//			printf("%d is all come\n",kaiguan);
		case 1:
		case 2:
		case 3:
			printf("%d is two come\n",kaiguan); 
		break;
		
		case 5:
		case 6:
		printf("%d is two come\n ",kaiguan);
		break;
	}
	return 0;
 } 
